96 Eleventh Annual Report 



Fruit fleshy. pag3 



Fruit with one seed, stone cylindrical Nyssa in 



CORNACE^ 321 



Fruit with more than one seed, rarely one, 



seeds flat Ebenace^ 327 



B. Leaves finely serrate, coarsely toothed or lobed. 

 C. Leaves with one primary vein. 



Bark and leaves aromatic Laurace^ 236 



Bark and leaves not aromatic. 



Staminate and pistillate flowers and fruit in cat- 

 kins. 

 Scales of winter buds 2, ovary many-seeded, 



seeds with a tuft of hairs at the summit. . .Salix in Salicace^ ... 113 

 Scales of winter buds more than 2, ovary 1- 

 seeded, seeds without a tuft of hairs at the 



summit Betulacace^ 150 



Staminate and pistillate flowers and fruit not in 

 catkins. 

 Fruit dry. 



Fruit a samara Ulmus in Ulmace^ ... 212 



Fruit not a samara Fagace^ 168 



Fruit fleshy. 

 Flowers more than 8 mm. (1/3 inch) broad, 

 fruit edible, apple-like. 

 Trees mostly with thorns, fruit with rem- 

 nant of calyx at apex of fruit, norm- 

 ally with more than 1 seed Malace^ 244 



Trees without thorns, fruit with no rem- 

 nant of calyx at the apex, fruit a 1- 



seeded edible drupe Amygdalace^ 280 



Flowers less than 8 mm. (1/3 inch) across, 



fruit a non-edible drupe. 



Leaves thick, generally widest above the 



middle, 3-6 cm. {\%-2% inches) long, 



stamens not on the petals, drupe with 



more than 1 seed Aquifoliace^ 301 



Leaves not thick, generally widest at or 

 below the middle, 6-15 cm. (2^-6 



inches) long, fruit with 1 seed Cornace^ 321 



C. Leaves with more than 1 primary vein. 

 Staminate and pistillate flowers in catkins. 



Fruit dry Populus in 



Salicace^ 120 



Fruit fleshy Morus in Morace^ . . . 226 



Staminate and pistillate flowers not in catkins. 

 Pistillate and staminate flowers separate. 

 Leaves 3-nerved at the base, fruit a 1-seeded 



^Y\\\)Q Celtis in UlmacEvE . . . 220 



Leaves 5-nerved at the base, fruit a head of car- 

 pels or achenes. 

 Bark fissured, not peeling off in flakes, leaves 



aromatic Altinginace^ 239 



Bark peeling off in flakes, leaves not aromatic . . Platanace^ 241 



Pistillate and staminate flowers in one. 



Fruit dry Tiliace^e 317 



Fruit fleshy Malace^ 244 



